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Price, W. W.; Heard, R.W.; Stuck, L. (1994). Observations on the genus Mysidopsis Sars, 1864 with the designation of a new genus, Americamysis and the description of Americamysis alleni and A. stucki (Peracarida: Mysidacea: Mysidae), from the gulf of Mexico. Proc. Biol. Soc. Wash. 107(4): 680-698.
180693
Price, W. W.; Heard, R.W.; Stuck, L.
1994
Observations on the genus Mysidopsis Sars, 1864 with the designation of a new genus, <i>Americamysis</i> and the description of <i>Americamysis alleni</i> and <i>A. stucki</i> (Peracarida: Mysidacea: Mysidae), from the gulf of Mexico
Proc. Biol. Soc. Wash.
107(4): 680-698
Publication
NeMys doc_id: 3682
NeMys doc_id: 3512
M1064 Americamysis, a new genus, is proposed to receive six American species: Mysidopsis bigelowi Tattersall, 1926; M. almyra Bowman, 1964; M. bahia Molenock, 1969; M. taironana Brattegard, 1973; and two new species, Americamysis alleni and A. stucki. Mysidopsis bigelowi is designated as the type species of the new genus. Americamysis is defined by a combination of characters, most notably: the presence of two articles in the carpo-propodus of thoracic endopods 3-8; the absence of a terminal article on antennal scale; and the presence of less than eight ventrolateral spines on uropodal endopod, all of which are confined to the region of the statocyst. Americamysis, Mysidopsis, and its subgenera are distinguished from each other by a variety of characters, including the morphology of the mandibular palp, antennal scale, and telson. A complete systematic review may indicate that the genus Mysidopsis sensu late is polyphyletic and represents three or more distinct genera. The new species, Americamysis alleni and A. stucki, which are both only known from the Gulf of Mexico, are most similar and apparently most closely related to A. bigelowi. They can be separated from each other, A. bigelowi and the other species of Americamysis by the setation of their telsons and second thoracic endopods. A diagnostic table and key for separating the species of Americamysis and related species of Mysidopsis is presented. The distribution of the species within Americamysis extends along the Atlantic coasts of the Americas from the northeastern United States to Colombia
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